666071714 has 48 divisors (see below), whose sum is σ = 1314760896. Its totient is φ = 245829600.

The previous prime is 666071699. The next prime is 666071717. The reversal of 666071714 is 417170666.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (666071717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49604 + ... + 61584.

It is an arithmetic number, because the mean of its divisors is an integer number (27390852).

Almost surely, 2^666071714 is an apocalyptic number.

666071714 is a deficient number, since it is larger than the sum of its proper divisors (648689182).

666071714 is a wasteful number, since it uses less digits than its factorization.

666071714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12039 (or 12020 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 666071714 is about 25808.3651942544. The cubic root of 666071714 is about 873.3205178794.

The spelling of 666071714 in words is "six hundred sixty-six million, seventy-one thousand, seven hundred fourteen".